I have stood several times in front of an (apparently) plain white, chalk cliff-face along with others, while Prof Mortimore discussed the implications of what we were seeing. And, every time, I left not just thinking but knowing this was the most fascinating piece of geology I had ever seen. That is it the man.
![](https://geologybook.com/wp-content/uploads/2020/07/Logging-the-Chalk-1-e1596483840556.jpg)